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  2. List of RAL colours - Wikipedia

    en.wikipedia.org/wiki/List_of_RAL_colours

    Number Sample Colour name Description, examples RAL 2000: Yellow orange: RAL 2001: Red orange: RAL 2002: Blood orange: U2 line of the Berlin U-Bahn: RAL 2003: Pastel orange: U9 line of the Berlin U-Bahn; the Helsinki Metro system

  3. CPK coloring - Wikipedia

    en.wikipedia.org/wiki/CPK_coloring

    Column J is the color scheme used by the molecular visualizer Jmol. [9] Column R is the scheme used by Rasmol; when two colors are shown, the second one is valid for versions 2.7.3 and later. [9] [10] Column P consists of the colors in the PubChem database managed by the United States National Institute of Health.

  4. Chemical coloring of metals - Wikipedia

    en.wikipedia.org/wiki/Chemical_coloring_of_metals

    Black for aluminum. Boil a solution of 20 g ammonium molybdate and 5 g of sodium thiosulfate in a liter of water, immerse the objects, rinse, dry, wax or lacquer after the development of color. [33] Lustre colours. Use a solution of 280 g of sodium thiosulphate, 25 g of cupric acetate and 30 g of citric acid. It can be used on copper and its ...

  5. Recycling codes - Wikipedia

    en.wikipedia.org/wiki/Recycling_codes

    Recycling codes are used to identify the materials out of which the item is made, to facilitate easier recycling process. The presence on an item of a recycling code, a chasing arrows logo, or a resin code , is not an automatic indicator that a material is recyclable; it is an explanation of what the item is made of.

  6. Reynolds Wrap Aluminum Foil Is Now Color-Coded—Here’s What ...

    www.aol.com/reynolds-wrap-aluminum-foil-now...

    This foil is made with 100% recycled aluminum and has a much smaller carbon footprint than its brethren. It uses 90% less energy than developing a brand-new foil. It uses 90% less energy than ...

  7. List of colors (alphabetical) - Wikipedia

    en.wikipedia.org/wiki/List_of_colors_(alphabetical)

    This is an accepted version of this page This is the latest accepted revision, reviewed on 16 February 2025. For other color lists, see Lists of colors. This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources. Find sources: "List of colors" alphabetical ...

  8. Colour Index International - Wikipedia

    en.wikipedia.org/wiki/Colour_Index_International

    Structure Range Category Nitroso: 10000–10299 Nitro: 10300–10999 Monoazo: 11000–19999 Category:Azo dyes: Diazo: 20000–29999 Category:Azo dyes: Triazo

  9. Color chart - Wikipedia

    en.wikipedia.org/wiki/Color_chart

    Color chips or color samples from a plastic pellet manufacturer that enables customers to evaluate the color range as molded objects to see final effects. A color chart or color reference card is a flat, physical object that has many different color samples present. They can be available as a single-page chart, or in the form of swatchbooks or ...